Fhe norris peters co



m. 625,249. Patented may le, |899.

J. A. DURNBAUGI'I.

LOCK.

(Application led Inn. 95, 1899.)

(No Model.)

E* I :v l- .9 l CT- 8 x 57\ "I 2,5

UNITED STATES PATENT OFFICE.

JOSEPH A. DURNBAUGH, OF WASHINGTON, DISTRICT OF COLUMBIA.

LocK.

SPECIFICATION forming part of Letters' Patent No. 625,249, dated May 16, 1899.

Application filed January 25, '1899. Serial No. 703,348. (No model.)

,To all, whom, t may concer/c:

Beitknown that I, J osEPH A. DURNBAUGH, a citizen of the United States, residing in the city of Vashington, District of Columbia, have invented a new and useful Lock, of which the following is a specification.

Hy invention relates to locks of the barreland-tumbler type, and has for its object to provide a combination-lock wherein the bolt may be actuated by either of two means from the same side of the door or other closure to which the lock may be applied, one of said means being barrel-and-tumbler-controlled and the other being com bination-controlled, whereby in the event of losing the tumblery adjusting key or of the tumbler mechanism becoming disarranged, and thus rendered inoperative, the operator may manipulate the bolt by means ot the combinationicontrolled mechanism, the lock embodying my invention being particularly designed for use in connection with lock boxes and drawers and similar receptacles, but being adapted also for use in connection with doors or, in fact, under any conditions requiring a lock which can be manipulated only by means of a special key or with a knowledge of the combination to which the lock is set.

A further object of my invention is to provide a simple, compact, and efficient relative arrangement of the bolt-controlling devices,

adapting the lock to be operated by either of tion, and the novel features thereof will be particularly pointed out in the appended claims.

In the drawings, Figure l is a face View of the exposed portion of a lock constructed in accordance with my invention as seen when applied to a door, such as that of a lock-box.

Fig. 2 is a longitudinal section of the lock,

showing the parts arranged for forming letter combinations. Fig.3isarearvie\v. Fig.4is a plan view showing in section the dials ar- 'ranged for forming numeral combinations.

sponding parts in all the figures of the draw= ings. Y

In the illustrated embodiment of my invention, 10 represents'a barrel-casing, in which is mounted a barrel 1l, having a key-seat 12, tumbler-pins 13 and tumbler-setting pins 14 being arranged, respectively, in seats in the casing and barrel for operation by means of a key 15, substantially as in the ordinary practice in connection with barrel-and-tumbler locks. The casing may be held in a fixed position by the use of any suitable means adapted to the construction of the door or other device in connection with which the lock may be used; but in the construction illustrated the casing is provided with a lateral ear 16, from which project attaching-arms 17, which may be terminally engaged by screws 18, said arms'forming a yoke supported by a faceplate 19. The casing is further provided with a reduced spindle portion 20, extending from a shoulder 20 to the rear surface of the face-plate, and upon this spindle portion are mounted tumbler-disks 2l, of which any desired number may be employed, said disks being free to turn independently of the spindle portion upon which they are mounted and being spaced apart by interposed Washers or collars 22, which are keyed to said spindle portion by means of Webs'23, engaging a longitudinal groove in the spindle portion to prevent rotation thereof.

The barrel extends beyond the plane of the foremost tumbler-disk and th rough a suitable opening in the face-plate of the lock,and upon the exposed extremity thereof is mounted for.

revoluble movement a knob 24E. In the construction illustrated the front end of the barrel is headed to form a shoulder 25, be-

IOO

tween which and the plane of the face-plate is arranged said knob to prevent axial displacement of the latter, and the knob is preferably anged at its outer end, as shown at 26, to receive the head of the barrel; but it will be understood lthat the details of this portion of the construction maybe varied to suit the preferences of the manufacturer.

27 represents the lock-bolt,which is mounted to slide in connection with suitable guides, such as those shown, respectively, at 2S and 29, and carried by this bolt is a finger 30, arranged in the path of the free end of an arm 3l, carried by the barrel, said barrel being extended in rear of the tumbler-casing and having the said arm detachably secured thereto against independent rotation. In the construction illustrated the eye of the arm 3l has an interlocking connection with the rear end of the barrel, and aXial displacement of said eye is prevented by means of a screw 32, of which the head overlaps the eye at one point. Backward movement of the barrel beyond a normal or initial position is prevented by a fixed stop 33, arranged in the path of the arm 31 and, as illustrated, attached to the lateral projection of the tumbler-casing, and as the boltis yieldingly held in its extended or locking position by means of an actuating-spring 34 it will be seen that the key-seat of the barrel is normally maintained in such a position l'as to be readily accessible by the tumbler-ad j usting key. Also the above-described finger 30 carries a detent-guide 35, in which is mounted a gravitydetent 3G, arranged in operative relation with the tumbler-disks and adapted at its lower edge to engage peripheral notches 37 in said disks when the notches of the several disks are arranged in alinement in the plane of the detent. The yielding detent may be actuated by any suitable means to cause its engagement with the peripheral notches of the disks when the latter are properly disposed with relation thereto; butI prefer to utilize gravity asthe actuating force because of the reduction of friction over that which would be eX- erted by a spring, the absence of a snap or click as the peripheral notches are brought into the plane of the detent, and also the simplification of the construction, and when, as illustrated, the bolt is arranged to operate above the plane of the tumbler-disks I am .enabled to locate the detent-guide directly in ,upwardl displacement I preferably employ a stop pin 39, transversely spanning the detent-guide. and extending through a vertical guide-slot 40-in the detent, as shown in Fig. 2.

The means which I have illustrated for communicating motion from one tumbler-disk to the next, whereby all may be rotated in a common direction by means of the front or foremost disk, consist of studs 4l, projecting from the faces of the disks and arranged in common paths, and motion is communicated from the exposed operating knob or handle 24 to the front disk by means of a similar stud 42. Therefore with the parts constructed as thus .far described the bolt may be retracted by inserting into the key-seat a tumbler-pinadjusting key of the proper construction, and thus communicating motion from the arm 31 to the bolt-carried nger 30; or in case of accident to the barrel-and-tumbler mechanism or lacking the proper key the operator may adjust the tumbler-disks by means of the exposed knob to arrange the notches of said disks in registration with the detent to allow the latter to drop into engagement with the notches, whereupon the bolt may be retracted by turning the knob in the proper direction, and thus communicating motion through the front disk and the detent to the arm 30. In practice the notch of the front disk is beveled or rounded at one side to facilitate the engagement therewith of the detent (the other disks being properly positioned) when said foremost disk is turned in one direction; but the other side of said notch is abrupt or radially disposed to provide for communicating motion from the disk to the bolt by advancing the detent in the direction of movement of the bolt. Also the beveling of one side of the notch in the front disk provides for throwing the detent out of engagement with t-he notches of thedisk when said foremost disk is turned in the opposite direction, whereby after the lock has been lopened the `disks may be turned out ot' their IOO bolt-releasing positions to prevent future manipulation of the lock without a knowledge of the combination to which the same is set.

In order that the combination may be changed, the positions of the studs by which motion is communicated from one disk t0 another may be angnlarly adjusted with relation to the detent receiving peripheral notches of the disks, and to provide for this angular adjustment I employ a sectional construction of disk, comprising a core 21 and an encircling rim 2lb, the stud being threaded in a socket 43 in the core near its periphery and the said notches being formed in the periphery of the rim. Each stud, however, in the plane of the disk isprovided with a camface 44, which when the stud is in one position binds against the inner edge of the rim, and thus locks the latter frictionally against .rotation independently of the core, whereas when the stud is in another position the rim is released to allow the requiredangular adj ustment thereof. In the construction illustrated in Figs. 2 to 6, inclusive, this cam-face is provided by iattening the stud at one side, and when thel attened portion of the stud faces the inner edge of the rim the latter is IIO free to turn, whereas when the stud is turned slightly in either direction from said position it acts as a friction-clutch to lock the rim at the desired adjustment. In the modified construction illustrated in Fig. 7 the stud is provided with an enlargement 45, forming the cani; but the operation is identical with that above described. Each stud may be provided with a key-seat 4G to facilitate turning of the stud in releasing and subsequently locking the rim at the desired adjustment.

In addition to the above-described means for varying the combination I employ a plurality of indicating-dials 47 and 4S, the former of which is preferably carried by the abovedescribed knob 24, while the latter, although coaxial with the former, is independent thereof and may be secured to the face-plate of the lock or to the exterior surface of the door in connection with which the lock is used to provide for a movement of the knob-carried dial without affecting that which is fixed in position. A stationary index 49 of any suitable construction (as inscribed upon the faceplate or surface of the door) is arranged adjacent to the periphery of the outer dial 4S, and said outer dial, which preferably carries combination-letters, as illustrated, maybe arranged to receive rotary motion from the knob by employing fastening devices, such as screws 50, extending through the dial 47 and engaging the dial 4S, as indicated in Fig. 2. Alsothe dial 48 carries an index 5l, and when it is desired to' use the permutation characters carried bythe dial 47 said fastening devices, consisti-ng of the screws 50, may be extended through the dial 4S and engaged with the face-plate or other fixed object adjacent to the plane of said dial to hold the latteragainst rotation,while allowing the dial 47 to turn independently thereof. In practice I prefer to provide the dial 48 with segmental slots 52, with which said fasteningscrews engage, whereby angular adjustment of said dial may be accomplished to vary the combination without recourse to the adjustment of the studs of the tumbler-disks. The means described for varying the combinations provide for forming practically an unlimited number of combinations.

It will be seen from the foregoing description that the lock is of simple and compact construction, adapting it to be arranged within a small compass suitable for use in connection with lock boxes and drawers, and that owing to the relation between the parts the bolt may be operated either by means of the barrel or by means of the knob without affecting the other, whereby the lock-box or similar receptacle may be opened either with or without the aid of a key, provided the combination to which the lock is set is known, and, furthermore, it will be seen that the lock may be set for a combination of either letters or numerals, as may be preferred by the operator, and changed either by varyingthe position of the angularly-adjustable dial 48 or by varying the relative positionsof the disk-carried studs and notches.

It will be understood, furthermore, ythat in practice various changes in the form, propor tion, size, and minor details of construction within the scope of the appended claims may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

Having described my invention, what I claim isl. A barrel-and-tumbler lock mechanism having its casing provided with a spindle portion, combination tumbler disks mounted upon said spindle portion, a disk-operating knob, and bolt-operatin g means actuated respectively by the barrel and the tumblerdisks, substantially as specified.

2. A barrel-and-tuinbler lock mechanism having its casing provided with a spindle portion, combination tumbler disks mounted upon said spindle portion, a disk-operating knob, a bolt, and independent connections between the barrel and disks and the bolt, substantially as specified.

3. Abarrel-and-tumblermechanismhaving its barrel provided with a bolt-operating arm and its casing provided with a spindle portion, combination tum bler-disks mounted upon the spindle portion of the casing, an exposed disksetting knob, and means for communicating motion from the disks to the lock-bolt, substantially as specified.

4. A barrel-and-tumbler mechanism having its barrel provided With a bolt-operating arm and its casing provided with a spindle portion, combination tumbler-disks mounted upon the spindle portion of the casing, an exposed disksetting knob mounted upon an exposed portion of the lock-barrel, and means for communicating motion from the disks to the lockbolt, substantially as specified.

5. A barrel-aud-tumbler mechanism having its barrel provided with a bolt-operating arm and its casing provided with a spindle portion, combination tumbler-disks mounted upon the spindle portion of the casing, an exposed disksetting knob mounted upon an exposed portion of the lock-barrel and terminally flush therewith, and means for communicating motion from the disks to the lock-bolt, substantially as specified.

G. A barrel-and-tumbler lock mechanism having its barrel provided with an arm and its casing with a spindle portion, combination tum bler-disks mounted upon the spindle portion of the casing, a bolt, a bolt-operating arm carried by the barrel, amovable detent carried by the bolt for engagement by the tumbler-disks, and exposed means for adjusting the tumbler-disks, substantially as specified.

'7. A barrel-and-tumbler lock mechanism having its barrel provided with an arm and its casing with a spindle portion, combination IOO IIO

tumbler-disks mounted upon the spindle portion of the casing, a bolt, a bolt-operating arm carried by the barrel, a guide carried by the bolt, a gravity-actuated detent fitted in said guide for engagement by the tumblerdisks, and an exposed disk-setting device, substantially as specied.

8.- A barrel-and-tumbler lock mechanism having its barrel provided with an operating- 9. A barrel-and-tumbler lock mechanism having its barrel provided With an operatingarm and its casing with a spindle portion,

combination tumbler-disks mounted upon the spindle portion of the casing, a spring-actuated bolt having a finger arranged in the path of forward movement of said barrel-carried arm, a stop arranged in the path of backward movement of said arm, a movable detent carried by the bolt for engagement by the tumbler-disks, and exposed means for adjusting the tumbler-disks, substantially as specified.

10. A lock having a bolt, and barrel-andtumbler bolt-operating mechanism, combination tumbler-disks arranged in operative relation With said bolt, and disk-Settim g devices movable independently of the barrel, substantially as specified.

11. A lock having a bolt, and barrel-andtumbler mechanism for operatingthe bolt,

't-on bolt-operating tumbler-disks, and disksetting devices mounted coaxiallywith the tumbler, substantially as specified.

13. A lock mechanism having a sectional tumbler-disk comprising a core and rim, of which the latter is angularly movable independently of the former, and means, consisting of a stud, mounted in one of the disk-l sections, for clamping the rim at the desired angular adjustment with relation to the core, substantially as specified.

14. In `a lock mechanism, a sectional tumbler-disk having a core and an angularlyadjustable rim, and a cam-faced stud revolubly mounted in one of the disk-sections for engagement with the other to clamp the rim at the desired angular adjustment, substantially as specified.

15. In a lock mechanism, a sectional tumbler-disk having a core and a rim angularly adjustable with relation to the core, and a stud threaded in the disk-core, and havinga cam-face for frictionalengagement with the inner edge of the rim to lock the latter at the desired adj ustment,substantially as specified.

16. In a lock mechanism, the combination with bolt-operating tumbler-disks, of a tumbler-disk-setting knob,`a plurality of coaxial dials, one of which is carried by said knob,v

and means for communicating motion from the knob-carried dial to the other, substantially as specified.

17. In a lock mechanism, the combination with bolt-operating tumbler-disks, of a tumbler-disk-setting knob, coaxial dials, one of which is carried by said knob, andthe other 

